DB::select error array to string conversion

Hello, everyone I need help with the "array to string conversion" error I always get when trying to display tables from the Database.

if($this->parentData->type->slug == 'mysql')
  $select = "SHOW TABLES FROM `".$this->parentData->database."`"; 
else if($this->parentData->type->slug == 'pgsql') 
  $select = "select table_name FROM information_schema.tables WHERE table_schema = ". $this->parentData->schema;

Log::info('Select: '.$select); // Select: SHOW TABLES FROM `test2024`

$data = DB::connection($conn)->select($select); // Array to string conversion (Connection: mysql1, SQL: SHOW TABLES FROM `test2024`)

My $this->parentData

{
  "id":6,
  "name":"DB Test",
  "description":"DB Test Local",
  "database_type_id":1,
  "host":"127.0.0.1",
  "port":"3306",
  "username":"root",
  "password":"",
  "database":"test2024",
  "schema":"test2024",
  "year":"2024",
  "type" {
    "id":1,
    "name":"MySQL"
    "slug":"mysql"
  }
}  

$conn value is 'mysql1'

My mysql1 config is dynamic, but in that runtime is like this

array (
  'host' => '127.0.0.1',
  'port' => '3306',
  'database' => 'test2024',
  'username' => 'root',
  'password' => '',
)  

Glad to be helped, thank you